I was on BD AV 2010 and started having issues with vsserv.exe taking over 50% and sometimes as much as 99% of the CPU. I hadn't changed hardware or OS lately. I started the upgrade to BD AV 2011, and ran into an error. So I downloaded the uninstall tool and used it. Then I installed BD AV 2011. But I still have trouble with vsserv.exe taking so much cpu that the machine is unusable. That is not the way I want to make my machine safe. PC info: Win XP, Pentium Dual CPU (E2180) @2.00 GHz, 3.25 GB or RAM. I also tried turning off features that might slow it down. Turned off vulnerability scan, turned off search advisor, turned off identity control, turned off antiphishing. None of those made a difference. Turned on Game Mode. Didn't make a difference. Please help.